package com.wc.AlgoOJ_homework.AlgoOJ_test4.B_看时间;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;

/**
 * @Author congge
 * @Date 2024/3/15 19:09
 * @description http://43.138.190.70:8888/p/712?tid=65e5720827489dab814f4cab
 */

public class Main {
    static FastReader sc = new FastReader();
    static PrintWriter out = new PrintWriter(System.out);
    static int n, t, s;

    public static void main(String[] args) {
        t = sc.nextInt();
        while (t-- > 0) {
            Set<Integer> set = new HashSet<>();
            String tm = sc.next();
            s = sc.nextInt();
            String[] ss = tm.split(":");
            int h = Integer.parseInt(ss[0]);
            int m = Integer.parseInt(ss[1]);
            int res = 0;
            while (!set.contains(h * 60 + m)) {
                if (h == m / 10 + m % 10 * 10) {
                    res++;
                }
                set.add(h * 60 + m);
                int sum = h * 60 + m;
                sum += s;
                h = sum / 60 % 24;
                m = sum % 60;
            }
            out.println(res);
        }
        out.flush();
    }
}

class FastReader {
    StringTokenizer st;
    BufferedReader br;

    FastReader() {
        br = new BufferedReader(new InputStreamReader(System.in));
    }

    String next() {
        while (st == null || !st.hasMoreElements()) {
            try {
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt() {
        return Integer.parseInt(next());
    }

    String nextLine() {
        String s = "";
        try {
            s = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return s;
    }

    long nextLong() {
        return Long.parseLong(next());
    }

    double nextDouble() {
        return Double.parseDouble(next());
    }

    // 是否由下一个
    boolean hasNext() {
        while (st == null || !st.hasMoreTokens()) {
            try {
                String line = br.readLine();
                if (line == null)
                    return false;
                st = new StringTokenizer(line);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return true;
    }
}
